In Auckland there are 2 crews for Whales & Dolphin tour trips. The 360 degrees and Dreamweaver cruises.
Each cruise takes about 4 hours, and the cruises leave the ports of Auckland with passengers to seek Whales & Dolphins. If no whales and dolphins are found then the people who pay for the trip get a free trip to go on another cruise.
I highly recommend these cruises, having been on 3 of them. The 1st cruise I took was a 360 degrees tour and not one whale or dolphin was to be found. Then on the horizon we saw the reason why. An orca whale and her calf in the distance. Orcas kill whales and dolphins, which is why they are called killer whales.
On the 2nd cruise of 360 degrees we saw dolphins and evidence of whales.
I since then took a Dreamweaver cruise. It was very good. We saw Dolphins.